CA318924A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA318924A
CA318924A CA318924A CA318924DA CA318924A CA 318924 A CA318924 A CA 318924A CA 318924 A CA318924 A CA 318924A CA 318924D A CA318924D A CA 318924DA CA 318924 A CA318924 A CA 318924A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA318924A
Other languages
French (fr)
Inventor
E. Kittredge Linus
Churchill Davis Richard
Wesley Carpenter Warren
Frederick Dahl Jack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Inc
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA318924A publication Critical patent/CA318924A/en
Expired legal-status Critical Current

Links

CA318924A Telephone exchange system Expired CA318924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA318924T

Publications (1)

Publication Number Publication Date
CA318924A true CA318924A (en) 1932-01-12

Family

ID=35279479

Family Applications (1)

Application Number Title Priority Date Filing Date
CA318924A Expired CA318924A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA318924A (en)

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